diff --git a/src/peering/fullmesh.rs b/src/peering/fullmesh.rs
index 04318a3..cf10279 100644
--- a/src/peering/fullmesh.rs
+++ b/src/peering/fullmesh.rs
@@ -1,4 +1,4 @@
-use std::collections::{HashMap, VecDeque};
+use std::collections::{hash_map::Entry::Vacant, HashMap, VecDeque};
 use std::net::SocketAddr;
 use std::sync::atomic::{self, AtomicU64};
 use std::sync::{Arc, RwLock};
@@ -432,10 +432,8 @@ impl FullMeshPeeringStrategy {
 	fn on_connected(self: Arc<Self>, id: NodeID, addr: SocketAddr, is_incoming: bool) {
 		if is_incoming {
 			let mut known_hosts = self.known_hosts.write().unwrap();
-			if !known_hosts.list.contains_key(&id) {
-				known_hosts
-					.list
-					.insert(id, self.new_peer(&id, addr));
+			if let Vacant(entry) = known_hosts.list.entry(id) {
+				entry.insert(self.new_peer(&id, addr));
 				known_hosts.update_hash();
 				self.update_public_peer_list(&known_hosts);
 			}
@@ -446,12 +444,15 @@ impl FullMeshPeeringStrategy {
 				host.state = PeerConnState::Connected;
 				host.addr = addr;
 			} else {
-				known_hosts.list.insert(id, PeerInfoInternal{
-					state: PeerConnState::Connected,
-					addr,
-					last_seen: None,
-					ping: VecDeque::new(),
-				});
+				known_hosts.list.insert(
+					id,
+					PeerInfoInternal {
+						state: PeerConnState::Connected,
+						addr,
+						last_seen: None,
+						ping: VecDeque::new(),
+					},
+				);
 			}
 			known_hosts.update_hash();
 			self.update_public_peer_list(&known_hosts);